Prove-that-cos-pi-9-1-3-cos-2pi-9-1-3-cos-4pi-9-1-3-3-3-2-9-1-3-1-3-

Tinku Tara June 4, 2023 Algebra 0 Comments

Facebook Tweet Pin

Question Number 190659 by Shrinava last updated on 08/Apr/23

Prove that: ((cos (π/9)))^(1/3) − ((cos ((2π)/9)))^(1/3) − ((cos ((4π)/9)))^(1/3) = ((3 − (3/2) (9)^(1/3) ))^(1/3)

Prove that :

\sqrt[3]{\cos \frac{π}{9}} - \sqrt[3]{\cos \frac{2 π}{9}} - \sqrt[3]{\cos \frac{4 π}{9}}

= \sqrt[3]{3 - \frac{3}{2} \sqrt[3]{9}}

Terms of Service
Privacy Policy
Contact: info@tinkutara.com

Facebook Tweet Pin

Leave a Reply Cancel reply